Science ❯Geology ❯Seismology

Earthquake Measurement

Magnitude Scale Magnitude Richter Scale US Geological Survey Impact Assessment Magnitude Scales Tsunami Generation Seismic Waves Magnitude and Depth USGS

USGS Tracks Steady Seismic Activity: M5.9 Off Oregon and M6+ Shocks in Venezuela

A recent USGS model underscores widespread long‑term risk, reinforcing the need for preparedness.

Magnitude 5.6 Quake Strikes Gansu’s Longxi, Emergency Response Underway

Magnitude 5.9 Earthquake Strikes Off Oregon Coast With No Tsunami Threat

Two Strong Shallow Quakes Rattle Northwestern Venezuela, USGS Issues Yellow Alert

Magnitude 4.3 Quake Near UC Berkeley Rattles Bay Area, Triggers ShakeAlert

M7.8 Quake Off Kamchatka Triggers Tsunami Alerts as Alaska Advisories Are Downgraded

M7.4 Quake Off Kamchatka Triggers Tsunami Alerts Later Canceled

Shallow 3.7–3.9 Quake Rattles Central California Near Hollister

North America Logs Routine Seismic Activity as Mexico’s Deep M4.0 Triggers No Alert

Montserrat Records Third Minor Quake in 24 Hours

Shallow 2.8 Quake Near Strathalbyn Rattles Adelaide Hills

Strong 7.5 Quake Jolts Drake Passage; Chile Briefly Warned for Tsunami

Magnitude 4.7 Quake Near Río Grande, Oaxaca Leaves No Alert or Damage

Magnitude 3.5 Earthquake Strikes Kupwara in North Kashmir

August Quakes in Oaxaca and Chiapas Fall Short of Seismic Alert Criteria

San Bernardino County Rattled by Fresh 3.5-Magnitude Quake in Ongoing Tremor Swarm

Second Quake in Three Days Rattles New Jersey and New York City

3.0-Magnitude Quake Rattles New York Metro From Hasbrouck Heights Epicenter

Magnitude 4.0 Earthquake Strikes West of Haida Gwaii

UK Records 3.1-Magnitude Quake in Inchlaggan During Seismic Surge